@ahughes05 just like the ignition system, your Volvo stores fault codes off the fuel system and can be displayed by activating the on-board diagnostic unit. It works the same way as the ignition system. Anyhow, this could be an issue with your ECU since that is what controls the injectors etc.. Let us know what you get when you try what @vehiclefreak409 suggest since that will help with further troubleshooting as well. Here are parts of the manual that deal with the fuel system as well as the on-board diagnostics. [document|4131][document|4129][document|4130]